Flushing system



June 16, 1942. p CARRILLQ 2,286,896

FLUSHING SYSTEM Filed May 29, 1940 3 rwwwbom //7zz'ceZZ Carri/ IPatented June 16, 1942 i UNITED STATESi FATENT OFFICE Application May29, 1940, Serial No. 337,947 In Mexico May 11, 1940 2 Claims.

This invention is directed to an improvement in flushing systems, andmore particularly dirooted to a tank for use in toilets or othersanitary equipment.

The primary object of the invention is the provision of a tank throughwhich the water for flushing is automatically provided in adequatequantity for flushing purposes and is constructed of a materiallyreduced number of movable parts as compared with the conventionalflushing tank, with a view to avoiding difiiculty in operation incidentto the number of conventional parts without sacrificing any of theadvantages or functions desirable or necessary in the operation of suchan apparatus.

The improved flushing tank involves a valve control air inlet and an airadmission pipe arranged to admit air to compensate for the free fiow ofWater, with such air admission pipe to be cut off by the accumulation ofwater in the tank from the water inlet at a suificient height to createwithin the tank a body of air under pressure sufficient to close thewater inlet, and create in the tank a static body of water ready forflushmg.

The invention is illustrated in the accompanying drawing in which Thefigure is a view in elevation partly in section of the improved flushingsystem.

The improvement includes a tank 2 of appropriate size and of anyconventional or serviceable material, in the top wall 2 of which isarranged a Water pipe leading from a suitable source of supply of waterunder pressure, the said pipe opening into the tank and controlled by avalve 6, weight influenced in the closing direction. At one side wall ofthe tank, and at an appropriate height below the top Wall 3, there isprovided in such side wall 1 the inlet end of a pipe 8, open to theatmosphere, and controlled by a valve 9, weight influenced in theopening direction.

A flushing service or outlet pipe [2 is in open communication with thebottom of the tank I!) and removably secured by a gland II. This pipe l2leads to the point of use and is controlled by a valve l3 which may beconstructed, for example, in accordance with the valve disclosed inPatent No. 2,190,255, issued February 13, 1940, or may be of automaticor other preferred type. The requisite in connection with the outletpipe I2 is that its diameter shall be such and the flow permitted by thevalve I3 suflicient to permit the Water of the tank to flow from thetank at a rate in excess of its possible admission through the inletpipe 4. This will preclude the inlet flow of water being suflicient tomaintain the cumulating water.

5 empty, and the valve l3 closed, valves 6 and 9 are open, the firstadmitting a supply of water through the inlet pipe 4 to the tank 5 andthe latter permitting the escape of air from the tank through the pipe 8to compensate for the ac- At an appropriate height of the water in thetank, such water reaches the valve 9 and acts to close the same, cuttingoff the escape of air through the pipe 8 and permitting the air thustrapped in the tank above the level of the Water 5 to be subjected to agradually increasing pressure which will, according to the form and sizeof the details, gradually and finally completely close the inlet valve 6before the water 5 has reached the top of the tank.

The tank is thus charged with an appropriate body of water, which, onthe opening of the valve l3, regardless of the type of such valve, willbe discharged through the pipe l2 for flushing functions. As the airpressure above the northrough the pipe 4. As the volume of this flow isless than the volume of the escape, there is no possibility ofmaintaining the valve l3 open after the normal discharge of the staticbody of water in the tank.

The tank 2 may be constructed in any size or of any appropriatematerial, and the inlet pipe 4, air pipe 8, and outlet pipe l2 will, ofcourse, be formed in correspondence with the size and purposes for whichthe tank is designed.

What is claimed as new is:

1. A flushing system including a tank having a water inlet in its upperwall, a weight influenced valve controlling the inlet into and arrangedwholly within the tank, an air outlet pipe leading into the side wallbelow the upper end of the tank, a valve controlling the escape of airfrom the tank through said pipe, said last, named valve being arrangedwholly within the tank and subjected to the influence of the waterrising in the tank, and a discharge pipe communicating with the bottomof the tank, and a discharge control valve in said discharge pipe.

2. A construction as defined in claim 1 wherein the air escape pipeopens into the side wall of the tank at a point below a contemplatedfinal level of the water in the tank.

ANICETO CARRILLO.

